Saturday, 18 September 2021
Endorphin.es - West coast patch notes
Thursday, 16 September 2021
Endorphin.es Shuttle control & faderbank 16n
Tuesday, 14 September 2021
Zlob SVF (State Variable Filter) - build notes
It love the small form factor.
Just 4HP. WE need more 4HP filters ... useful for compact performance rigs.
https://zlobmodular.com/product/svf/
Everything is through-hole
Quite easy to build.
That 2K resistor needs to be in contact with the two transistors
The power section ...
2 1N4001 1N4004 DO41-10 D1, D2
3 1n4148 DIODED0-35 DO-35 D3, D4, D5
This is the control board. It sits at right angles to the main PCB
ICs are finally in.
1 LM13700N LM13700N DIP16 IC3
1 TL072IP 8-DIP(has to be a low offset voltage dual opamp)
1 TL074 TL074_ DIP14 U1
The 2019 revision also adds improved cutoff and resonance response and attenuversion through the ACV IN using the above pot. CV IN provides another unattenuated voltage input to modulate the frequency.
At the CV in, +10v will open the filter completely if the cutoff pot is CCW(counter clockwise). With the cutoff knob at noon the filter can be opened with +5v or closed with -5v. CV input at the ACV in is dependent on the CV attenuverter knob.
The filter has 2 audio inputs, but channel 2 is jumper selectable between standard audio in or Ping-able operation.
Saturday, 11 September 2021
Remembering 9/11
Friday, 10 September 2021
Elk Elektroniks ELKLIK
Wednesday, 8 September 2021
Happy 909 day
- Kick
- Snare-drum
- Tambourine
- Closed hi-hat
- Open hi-hat
- Cymbals
- Metal beat
AmpMix - RYO - Build notes
" Ampmix was designed as a handy CV mixer and processor with buffered
inputs but its low-noise circuit means it will also work great with
audio, even with full gain.
A 2.5V voltage offset is generated then normaled to the inputs of the 4
channels, giving them a maximum of 5V out each with knobs turned full
clockwise (2.0x gain). Please note that these offsets will affect the
mixing if the channel hasn't been patched on its input or output, so
turning all unused channels fully counter-clockwise/left (off) is
advisable for a clean mix"
https://modwiggler.com/forum/viewtopic.php?t=99573
So if you are using this as an audio mixer, make sure that any unused channels have their knobs turned fully counter clockwise.
Friday, 3 September 2021
Roland JUNO-60 JUNO-106 CR-78 all jamming together
...
Analog
clock from the CR-78 is syncing the JUNO-60. The 106 is playing the pad
and the arp on the 60 triggered from the 106 via MIDI.
Buchla 281 - quad function generator - Not your usual ADSR
regardless of the position of the trigger select switch when envelope generator "A" reaches
the peak of its cycle. (The end of its attack segment.)
the Trig B switch creates the same situation between envelope generators C and D.
Wednesday, 1 September 2021
Morocco - Sahara Desert
Berber camp site.
Breakfast.
...
Helping build some mud huts.
...
....
The wooden side planks are only placed temporarly. They are placed on both sides of the wall to be.
Soil is packed between then, when all is set, the wood is removed, to reveal the wall.
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